issues.txt

Frank s MP3 Player Source Files

Issues for Frank's MP Player
Last updated 22 October 2003
Note that unimplemented features are not considered issues! :-)


I2C / TWI Interface
===================

I've never managed to get the Mega128 TWI (two wire interface,
also called I2C) interface working totally satisfactorily. It seems
to require some "magic numbers"; I suspect it does some wierd
clocking tricks which results in strange waveforms with certain
settings. Just a suspicion, as I don't have a digital 'scope so I cannot
verify anything. And it's possible that the STA013 is very picky
about its I2C parameters, although I view this as less likely.
Nonetheless the current TWI parameters do work reliably. I don't consider
them optimal (I'd like it faster) but if you want to play with
the TWI interface, be warned, it's extremely easy to break it.
Not an issue per-se; just a warning.


STA013 BLURPS
=============

"Blurp" is the highly technical term for the noise resulting
when you press "next" in the middle of a track. Much experimenting
has not totally gotten rid of it. Although it is quite reduced;
it only happens sometimes. Others working with the STA013 have reported 
the same effect. If anyone knows of a solution, please let me know!





FEATURES TO COME...
===================

I want to add some features to make it easier to navigate through 
large numbers of tracks. Using subdirectories (which are supported)
is a great help. There are likely other things that can be done to
ease track selection.